Rubin
snow throwers



May 3, 1966 G. H. RUBIN Re. 26,010

SNOW THROWERS Original Filed June 5, 1961 2 Sheets-Sheet l INVENTORGEORGE H RU BIN ATTORNEY G. H. RUBIN May 3, 196%? SNOW THROWERS 2Sheets-Sheet 2 Original Filed June 5, 1961 INVENTOR GEORGE H RUBINATTORNEY United States Patent 26,010 SNOW THROWERS George H. Rubin, 624Marquette Ave., South Milwaukee, Wis.

Original No. 3,065,555, dated Nov. 27, 1962, Ser. No. 114,689, June 5,1961. Application for reissue July 8, 1964, Ser. No. 385,100

7 Claims. (CI. 37-43) Matter enclosed in heavy brackets appears in theoriginal patent but forms no part of this reissue specification; matterprinted in italics indicates the additions made by reissue.

This invention relates to improvements in snow throwers, and moreparticularly to a novel snow thrower of the motor driven type.

An object of the invention is to provide a device of the type having asuperior bi-directional chute construction.

Another object of the invention is to provide a device having novelblade construction and arrangement for efficiency in snow removaloperations.

Other and further objects of the invention will appear as thedescription proceeds, reference being had to the accompanying drawing,in which:

FIG. 1 is a side view in elevation of a snow thrower embodying theinvention.

FIG. 2 is an opposite side view of the machine.

FIG. 3 is a view taken on line 33 of FIG. 2.

FIG. 4 is a rear view in elevation of the device.

FIG. 5 is a view in perspective partially broken away.

FIG. 6 is a plan view partly in elevation and partly in section of theclutch mechanism as engaged.

FIG. 7 is a rear view in elevation of the clutch mechanism showndisengaged.

FIG. 8 is a plan view in elevation of one of the groundbearing rearwheels.

FIG. 9 is a fragmentary side view in elevation of the machine showing arunner attachment in place.

FIG. 10 is a vertical sectional view taken on line 1010 of FIG. 9.

Referring more particularly to the drawings, the numeral 10 refers tothe casing of the snow thrower, provided with angles 11 supporting theengine 12. The reducing gear 13 has a sprocket 14 connected by the chain15 with the sprocket 16 on shaft 17. A second sprocket 18 on shaft 17 isconnected by chain 19 with the gear 20 on the paddle shaft 21.

The sprocket 22 fixed on paddle shaft 21 is connected by chain 23 withsprocket 24 on the jack shaft 25. A sprocket 26 on shaft is connected bychain 27 with the clutch sprocket 28, mounted freely on shaft 30.Sprocket 28 has integral therewith the disc 31 and a laterally outwardlyextending pin 32 which is eccentrically disposed relative to shaft andwhich at times drivingly engages a laterally inwardly extending drivenstop 33 which is fixed to a driven ground-bearing wheel 34, shown as theright hand wheel in FIGURES 6 and 7. The side members 35 and 36 ofcasing 10 are vertically disposed and have attached thereto by means 37the frontal plates 38 and 39 which have outwardly diverged upper corners40 and 41.

[The paddle shaft 21 ha fixed thereto the bars 42, 43, 44 and 45 whichcarry the arcuate blades 46, the latter being set within inclined cutout portions of the ends of said bars.

The casing 10 centrally and rearwardly thereof carries two verticallyspaced, opposed and upwardly inclined plates and 51. Two axially alignedbolts 52 extend] The paddle shaft 21 has fixed thereto bars 42, 43, 44and 45 which carry the arcnale blades 46, the latter being set withininclined cut out portions of the ends of said Re. 26,010 Reissued May 3,1966 "ice bars; all of which combine to comprise a rotating bladeassembly with paddle shaft 21 as the axis of rotation. Centrally andrcarwardly of the snow thrower, casing 10 is comprised of Sections 90and 91 inclined upwardly and rearwardly. Vertically spaced plates 50 and51, respectively, are mounted on said sections and extend upwardly andrearwardly thereof. Between said sections 90 and 91 is a lateral snowdischarge opening having an upper side 92 and a lower side 93 in casing10. Two axially aligned bolts 52 extend through the plates 50, 51 andthrough the vertically spaced and opposed legs of a yoke 53 to pivotallymount the latter. Yoke 53 includes a curved web which is secured by anysuitable means, not shown, to the outer surface of a semi-cylindricalchute 54. Helical springs load the bolt heads into engagement withplates 50, 51 and the legs of the yoke 53 to increase friction andresist pivoting of the chute 54.

Thus, the chute 54 in the position of FIGURE 4 is located to dischargesnow to the left of the thrower. However, if the left end of the chute54 is pushed forwardly against the friction of the spring pressed bolts52, the right hand end will extend to the rear and snow will bedischarged to the right in a manner readily understood. It will beapparent that the chute 54 may be manually placed to throw the snow toright or left of the machine as may be desired.

Attached to [causing] casing 10 are a pair of handle arms 55 and 56provided with hand grips 57 and secured to the casing by bolt 58. Extraapertures at 59 in casing 10 provide for an adjustment of handle arminclination. A cross arm 60 connects the handle arms 55 and 56 andcarries a bracbet 61 and the pivoted hand lever 62 attached pivotally tothe rod 63 fitted at the lower end thereof with a clutch member 64.

With the hand lever 62 pulled up, FIG. 7, the rear wheels 34 are freewheeling, whereas when the hand lever 62 is pushed forwardly to forcethe rod 63 downwardly, FIG. 6, the clutch member 64 is pushed betweenthe conical elements 65 and 66. Conical element 65 is fixed to the shaft30, whereas element 66 is free to move against the spring 67, thusbringing pin 32 into engagement with the stop 33 to drive the right handwheel 34, FIG- URES 6 and 7. The left hand wheel 34 carries a laterallyoutwardly extending pin 68 which impinges against the side of alaterally inwardly extending stop 69 which is opposite to that of thestop 33 which is engaged by pin 32. Thus, a differential movement of thetwo wheels 34 is thus provided for.

The front ground bearing wheels 70 are extremely narrow to expeditemovement through the snow, whereas the rear wheels 34 are formed toprovide a continuous angular weaving edge to the running surface formaximum traction. In FIG. 6 the clutch mechanism is shown engagedwhereby the machine may be power driven. In FIG. 7 the clutch isdisengaged and the machine may be hand driven. In FIGS. 9 and 10 amodified form of the invention is shown, in which a runner is attachedto each plate 81 by a pin 82 and to each end of the shaft 83 by a nut84, on each side of the casing 86.

In use, the blades 46, viewed from the left side of the machine turncounterclockwise and throw the snow backwardly and upwardly in asemi-circle in a spiral movement through the chute 54 as it is placed toeither side of the machine, therefore eliminating any clogging up in thechute by damp and wet snow.

It will be understood that the device is capable of many modificationsin structure and design, without departing from the spirit of theinvention, within the scope of the appended claims.

Having thus described the invention, what is claimed 3 and desired to besecured by Letters Patent of the United States, is:

1. In a snow thrower including a casing, a source of power supportedthereon, a rotating blade assembly in said casing forwardly thereof andoperably connected to said source of power, and an upwardly inclinedramp rearwardly of said blade assembly; the improvement comprising apair of vertically spaced opposed and upwardly inclined plates securedto said casing rearwardly and centrally thereof to define an outlet atthe top of said ramp, a yoke including a web and two vertically spacedand opposed legs disposed between said plates, means pivotallyconnecting said legs to said plates, and a reversible snow dischargingchute fixed to said web between said plates.

2. A snow thrower according to claim 1, wherein said means pivotallyconnecting said legs to said plates includes [bolts include] springsloading said legs of said yoke into frictional engagement with saidplates to resiliently resist reversing of said chute.

3. A snow thrower according to claim 1, there being A wardly of one ofsaid wheels, means operatively connecting said source of power to saidclutch member to rotate the latter, a laterally outwardly extendingdrive member fixed to said clutch. a laterally inwardly extending stopfixed to said last named wheel, manually operable clutch operating meansfor moving said clutch member laterally along said axle whereby to movesaid drive member into and out of driving engagement with one side ofsaid stop.

4. A snow thrower according to claim 3, there being a laterally inwardlyextending pin fixed to at least the other of said wheels, a stop fixedto said axles laterally inwardly of said other wheel, and said lastnamed pin engaging said last named stop on the side thereof opposite tothe side of the first named stop engaged by said first named pin,whereby to provide a differential mechanism.

5. A snow thrower according to claim 1, there being at least a pair ofground engaging wheels supporting said casing, an axle mounting saidwheels, clutch means for selectively connecting said source of power toone of said wheels, and means providing a differential mechanism for theother of said wheels.

6. In a snow thrower including a casing, a source of power supportedthereon, rotary means operatively connected to said source of power, andreversible chute means for selectively throwing snow from said rotarymeans either to the right or the left of said casing; the improvementcomprising at least a pair of ground engaging wheels supporting saidcasing, an axle mounting said wheels, a clutch member slidably androtatably mounted on said axle laterally inwardly of one of said wheels,means operatively connecting said clutch member to said source of powerfor rotation thereby on said axle, a laterally outwardly extending drivemember fixed to said clutch member, a laterally inwardly extendingdriven stop memher fixed to said last named wheel, manually operableclutch operating means carried by said thrower for moving said clutchmember laterally along said axle whereby to move said drive memberthereof into and out of driving engagement with said driven stop memberso as to drive said last named wheel.

7. In a snow throwing machine, a casing comprising a pair oflongitudinally extending, substantially parallel, vertical plates, asource of power mounted on the top of said casing, a transverselyextending blade assembly r0- tatably mounted between said plates, drivemeans between said source and said blade assembly, a pair of spacedupwardly and rearwardly inclined, substantially parallel, transverselyextending plates fixed between said vertical plates and locatedrearward/y of said blade assembly, said vertical plates having sideopenings between said inclined plates and extending forwardly therefrom,a generally transversely extending discharge chute pivotally mountedintermediate its ends between said inclined plates, said chute beingpivotally mounted to mate with either of said side openings to dischargesnow to either side of the machine.

References Cited by the Examiner The following references, cited by theExaminer, are of record in the patented file of this patent or theoriginal patent.

UNITED STATES PATENTS D, 186,948 12/1959 Anderson 40-1 570,952 11/1896Plass.

1,587,449 6/1926 Wandscheer 37-43 1,588,745 6/1926 Kear 37-41 1,649,28311/1927 Broughton 192-24 1,779,994 10/1930 Tatter 301-41 2,104,2651/1938 Marsden 192-24 2,200,623 5/1940 James 37-43 2,224,870 12/1940Jensen 37-43 2,487,936 11/1949 McCrady et a1. 192-93 X 2,545,470 3/1951Kcar 37-24 X 2,605,561 8/1952 Maynard 37-43 2,627,155 2/1953 Shuler37-43 2,695,071 11/1954 Hupp. 2,770,893 11/1956 Jacobs 37-43 2,794,2716/1957 Wallack 37-43 2,871,585 2/1959 Merry 37-43 2,919,504 1/1960 Rubin37-53 2,977,694 4/1961 Higby 37-43 3,028,694 4/1962 Creighton 37-83,052,048 9/1962 Fiske 37-53 3,074,189 1/1963 Phelps 37-43 ABRAHAM G.STONE, Primary Examiner.

r CHARLES E. OCONNELL, BENJAMIN HERSH,

Examiners. G. T. MOLLER, F. B. HENRY, Assistant Examiners.

